Observation of Dynamical Fermionization in 1D Bose Gases

ORAL

Abstract

The momentum distribution of a harmonically trapped 1D Bose gases in the Tonks-Girardeau limit is expected to undergo dynamical fermionization [1]. That is, after the harmonic trap is suddenly turned off, the momentum distribution steadily transforms into that of an ideal Fermi gas in the same initial trap. We measure 1D momentum distributions at variable times after such a quench, and observe the predicted dynamical fermionization. In addition to working in the strong coupling limit, we also perform the experiment with intermediate coupling, where theoretical calculations are more challenging. [1] M. Rigol, A. Muramatsu, PRL 94, 240403 (2005); A. Minguzzi, D. M. Gangardt, PRL 94, 240404 (2005).

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Authors

  • Neel Malvania

    Department of Physics, The Pennsylvania State University, University Park, PA 16802

  • Lin Xia

    Department of Physics, The Pennsylvania State University, University Park, PA 16802

  • Wei Xu

    Department of Physics, The Pennsylvania State University, University Park, PA 16802

  • Joshua M. Wilson

    Department of Physics, The Pennsylvania State University, University Park, PA 16802

  • Laura A. Zundel

    Department of Physics, The Pennsylvania State University, University Park, PA 16802

  • Marcos Rigol

    Department of Physics, The Pennsylvania State University, University Park, PA 16802

  • David Weiss

    Pennsylvania State University, Department of Physics, The Pennsylvania State University, University Park, PA 16802